property hasListener

Dart SDK

dart:async

StreamController

1. Constructors
2. StreamController
3. broadcast
4. Properties
5. done
6. hashCode
7. hasListener
8. isClosed
9. isPaused
10. onCancel
11. onListen
12. onPause
13. onResume
14. runtimeType
15. sink
16. stream
17. Operators
18. operator ==
19. Methods
20. add
21. addError
22. addStream
23. close
24. noSuchMethod
25. toString